Chapter One Science of Biology What is Biology
Chapter One Science of Biology
What is Biology? • The Study of living things.
The Goal of Science IS… 1. To investigate and understand the natural world
The Goal of Science is… 2. To explain events in the natural world.
The Goal of Science is… 3. To use those explanations to make useful predictions.
Science Refers to… 1. an organized way of using evidence to learn about the world
Science refers to 1. A body of knowledge that scientists have built up over the years, based on evidence.
Science Refers to… A way of knowing, that is always changing
Redi’s Experiment (pg 9 in text)
• Manipulated variable-the one deliberately changed • Responding variable-the one that is observed that changes in response to the manipulated variable
Draw a Conclusion • Based on data • Supports or refutes your hypothesis
Inference • Logical interpretation based on data.
Theory • Well tested explanation that is supported by multiple forms of data
Theory • There may be conflicting theories on any given subject • No theory is considered absolute truth
Life • How do you know something is alive?
Which of the following is alive? • • Pencil Tomato Tornado Sun Rain Horse Oak Tree • • • Spider Bacteria Icicles Baby Fire
Life • Made of cells
Life… • Grows and Develops
Life… • Reproduces
Life… • Has DNA or RNA, usually both
Life does… • Obtain and use materials & energy
Life Does… • Respond to environment
Life Does… • Maintain homeostasis
Life Does… • As a group, change over time
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